Gas producer



. TREAT GAS PRODUCER me u A Fi lad Ilafy 5'. 1922 7 Sheets-Sheet 1INVENTOR'" F. H. TREAT an s rnobbqsa Filed Kay .5. 12122 *r'Sheets-Sheet 2 f, INVENTQFI flaw; y,

Aug. 25, 1925.

- V F'. H. TREAT GAS .ERODQCER Filed May 5. 1922 7 Sheets-Sheet 3 mm mm;

F. H. TREAT GAS PRODUCER INVENTOR F. H. TREAT Aug- 25. 1925.

GAS PRODUCER Filed-14 w 1922 v sheets-sheet 1,550,991 F. H. TREAT GASPRODUCER Filed May 5. 192.2 '7 Sheets-Sheet v Patented Aug. 25, W25.

if i FRANCIS H. TREAT, OF EAST CLEVELAND, O'HIO, ASSIGNOB T0 DUFFPATENTS COM- PANY, INCORPORATED, 0F PITTSBURGH, PENNSYLVANIA, A.CORPORATION OF PENNSYLVANIA.

GAS PRODUCER.

Application filed May 3,

To all whom 2'2 may concern:

Be it known that I, FRANCIS H. TREAT, a citizen of the United States,residing at East Cleveland, in the county of (luyahoga, State of Ohio,have invented a new and useful Improvement in Gas Producers, of whichthe following is a full, clear, and exact description.

The present invention relates broadly to gas producers, and moreparticularly to improvements in the construction and operation thereofwhereby improved fuel feeding and distribution together with agitationof the fuel bed is provided.

It has heretofore been proposed to provide fuel feeding devices forproducers adapted to deliver the fuel through openings extendingsubstantially radially of the producer, or by feeding devices deliveringto a bell for effecting prelin'iinary distribution of the fuel. Suchdevices, while used to a considerable extent. do not eifectan eflicientdistribution of the fuel. The present invention overcomes certainobjections to fuel feeding devicesof this character by providing a.plurality of fuel feeding de vices for a 'gas producer, each of whichdevices is adapted to initially deliver the coal directly to differentportions or zones of the fuel bed.

The present invention also provides means whereby the amountof fueldelivered to each of the feed devices may be easily and independentlyvaried as desired.

Still another object of my invention is to provide means for effectivelyagitating the different portions or zones of the fuel bed as the fuel isdelivered thereto.

The foregoing and other objects of the present invention, together withtheir at tendant advantages will be readily apparent as the inventionbecomes better understood by reference to the accompanying specificationand drawings forming a part thereof. The drawings are illustrative onlyof a preferred embodiment of the present invention and it will beunderstood that they do not define the limits of the invention, aschanges may be made in the construction and operation without departingfrom the 1922. Serial No. 558,176.

spirit of the invention or scope of my broader claims.

in the drawings:

Figure 1 is a vertical sectional view, partly in elevation, through agas producer embodying the present invention; I

Figure 2 is a transverse sectional view on the line IIII of Figure 1,looking in the direction of the arrows;

Figure 3 is a vertical sectional view, on an enlarged scale, on the lineIII-I1I of Figure 2, certain of the parts being illustrated inelevation;

Figure i is a partial transverse sectional view on the line IVIV ofFigure 1, looking in the direction of the arrows;

Figure 5 is a detail side elevation of a portion of the presentinvention;

Figure 6 is a detail sectional View illustrating the means for effectingrelative rotation between different portions of the producer;

Figure 7 is a vertical sectional view on the line VIL VH of Figure 1,looking in the direction of the arrows;

Figure 8 is a top plan view of a portion of the fuel feeding anddistributing means, and

Figure 9 is a diagrammatic sectional view illustrating a portion of thefeeding, distributing and agitating mechanism.

In accordance with the present invention, I may utilize aproducer body 2of any desired construction having a suit-able gas offtake 3. Supportedon the upper portion of the producer 2 and projecting inwardly therefromis an annular cover member 4 fixed against rotation and provided with aseries of poke openings 5 adapted during the operation of the producerto be normally closed by suitable closures 6 as is customary in thisart.

The annular cover member 4: is preferably provided with a channel 7adapted to form a water seal for the rotating portions of the producertop as will be more fully pointed out hereinafter. Projecting upwardlyfrom the cover a, in any desired manner, are a plurality of spacedsupporting members 9 which are preferably flanged at their upper ends toform a seat for the annular gear 10 which is secured thereto.Surrounding the annular gear 10 1s an annular track 11 which is adaptedto support the weight of the rotating parts of the producer as will bemore fully apparent hereinafter.

Projecting downwardly through the opening in the cover member at is afuel feedlng distributer 12 having secured thereto and projectingradially thereof a plurality of spaced bearings 13 adapted to receivestub shafts 1st. On the outer end of each of these stub shafts issuitably mounted a coni cal supporting roller 15 adapted to engage andtravel upon the annular track 11. These rollers maintain the fuelfeeding distributer 12 in proper position and permit free rotationthereof. This distributer constitutes, in effect, a portion of theproducer cover.

Carried by the distributer 12, and projecting upwardly therefrom, asillustrated in Figures 2 and 6, is a bracket 16 carrying at its upperend a. motor 17 for effecting relative rotation of the parts asrequired. This motor may be a variable speed motor of any desired type.Keyed to the armature shaft of the motor 17 is a driving pinion 18 whichis adapted to mesh with and drive the first gear 19 of a suitable geartrain. One of the gears of this train may comprise a friction clutch 20,as illustrated in Figure 6 whereby in case any of the parts becomewedged, injury will be prevented. This gear train is adapted to transmitpower to the bevel driving gear 21 which meshes with the rack 10,whereby as the motor 17 is operated the distributer 12 will be rotatedat a speed which will vary as the motor speed is varied.

As illustrated more particularly in Fig ures 1, 4; and 9, thedistributer 12 is provided with a plurality of substantiallyequidistantly spaced fuel feeding openings A, B and C. Each of theseopenings has cooperating therewith a back wall 23, formed in thedistributer 12. These back walls each have different degrees ofinclination, whereby fuel delivered to the fuel feed openings will beprojected onto the fuel bed at correspondingly different distances fromthe cen ter thereof. The fuel feeding opening A has a substantiallystraight back wall 23 whereby fuel will be delivered to the fuel bed inthe zone A, as illustrated in Figure 9, the fuel during dischargefalling substan tially as indicated by the chain line a of Figure 1. Inlike manner, the openings B and C will distribute fuel respectively tothe zones B and C, the fuel being discharged following the chain lines oand 0. The inclination of the back walls 23 of each of the feedingopenings is preferably such that each of these openings will deliverfuel to a zone in the fuel bed corresponding substantially in area tothe area of the total fuel bed divided by the number of fuel feedingdevices. As illustrated herein, each of the zones A, B and C preferablyrepresents one-third of the total area of the fuel bed. It will beapparent, however, that such an arrangement, while highly desirable, maybe varied within the scope of the present in vention.

For delivering fuel to each of the fuel feeding openings there may beprovided a separate feed chute 24 rigidly secured in any desired mannerto the distributer 12 so as to rotate therewith. Each of the chutes 24:is adapted to receive fuel from a common constant source of supplycarried by a stationary plate 25, of generally circular outline, havinga plane upper surface. The fuel may be initially delivered to this plateby a conductor 26 having its longitudinal axis substantially coincidentwith the axis of rotation of the distributer 12. This conductor ispreferably, although not necessarily, entirely supported from its upperend, such support, if desired, being furnished by the fuel bunker orhopper. It will be apparent that fuel fed through this conductor willautomatically pile up on the plate 25 substantially as indicated by thechain lines cl in Figure 1 to maintain therein a constant quantity offuel. This constant fuel feeding operation tending to maintain aconstant quantity of fuel in the shape of a frustum of a cone havingsides at an angle corresponding to the angle of repose of the fuel willcontinue so long as the conductor contains sufficient fuel to completelyfill its cross section. The fuel is prevented from accidental spillingfrom the plate 25 b means of upstanding segmental guards 2t secured toand extending between the walls of adjacent chutes 24:. For transferringthe fuel from the plate 25 to each of the chutes, I have illustratedeach of the chutes as provided with a measuring means comprising acurved scraper 28 projecting inwardly across a portion of the plate 25.Each of these scrapers has an adjustable connection 29 with itscorresponding chute 24 whereby the position of the scrapers may beindependently varied as desired to measure or vary the amount of fueltransferred thereby to the respective chutes during the relativerotation between the scrapers and the plate These scrapers suflicientlyagitate the fuel to cause the same to tend to continuously flowoutwardly and fill any voids left by the removal of fuel by thescrapers. As these scrapers in actual use revolve comparatively slowly Ihave found that the fuel will actually fiow closely behind them torestore the angle of repose.

I have found that the plate 25 may be con veniently supported in thedesired position by providing on the lower surface thereof ll t. bi r' tbl til Ll til.

an annular conically faced track adapted to be engaged by and supportedon conical rollers 31. These rollers 31 are preferably equi-distantlyspaced around the track 30, and correspond in number to the number offeed chutes. Each of the rollers 31 may be carried by a two bearingshaft 32. These shafts are journaled at one end in their respective feedchutes, and at their outer ends are journaled in the uprights 33.Mounted on the shafts 82 are spur gears 34 constituting the upper gearof gear trains as clearly indicated in Figures 1 and 7. The lower gear35 of each gear train is preferably splined to the hollow hub 36 of arotating pocketed fuel passing and gas sealing member 37. The pocketedmembers 37 are each adapted to rotate in pockets 38 formed in each ofthe chutes 24, and are provided with heads 39 lying in the planes of thefront and rear walls of the chutes. Extending through the hollow hubs 36of the members 37 are adjustable tie rods 40 adapted to be secured tothe uprights 33 and each having a suitable thrust bearing on its outerend to maintain the same in proper position. On its outer end each ofthe members 37 carries a bevel gear 41 adapted to mesh with the an nularrack 10.

Due to this construction, it will be apparent that as the distributer 12is rotated the members 37 will also be continuously rotated by reason ofthe engagement of the bevel gears tl with the stationary annular rack10. This rotation will be transmitted through the respective gear trainsto the supporting rollers 31. The number and arrangement of gearstogether with the gear ratios may be so proportioned that the rollers 31will be rotated backwardly at a pcripheral speed corresponding with theperipheral speed at which the distributer 12 is rotated, or at a speedwhich is greater than that of the distributer. In this manner the plate25 will be either maintained in stationary position to permit the fuelto be removed therefrom by the scrapers 28, or will have a tendency toadvance and meet the scrapers.

This construction is desirable as it provides an adequate support forthe plate 25 and maintains it in proper relationship to the conductor 26without the provision of any supporting or tying members extendingbetween the plate and the conductor. This provides an unobstructed spacefor the fuel flow from the lower end of the conductor, and for theoperation of the scrapers.

On the conductor 26 are mounted collector rings 42 suitably insulatedand adapted to be connected in any desired manner to a suitable sourceof current. Cooperating with these collector rings, as illustrated inFigure 5, are brushes 43 which are electrically connected by a suitablecable 44 with the motor 17 for continuously supplying current to themotor during the operation of the gas producer.

While the mechanism heretofore described is effective for producing anefiicient initial distribution of the fuel within the producer it ishighly desirable to provide cooperating means for agitating the fuelbed. For this purpose, 1 preferably provide a series of pokers A B and CEach of these pokers comprises an angular body portion of generallyL-shape. Each of the ofiset poker portions carries a plurality ofagitating lingers 46 adapted to project downwardly into the fuel bed.The vertical portion of each of the pokers extends upwardly through aradial opening in the distributer 12. The radial opening a has guidelugs 47 projecting inwardly from opposite sides thereof adjacent theinner end of the opening. The opening 6 has similar guide lugs 47projecting inwardly from opposite sides thereof at an intermediateportion, while the guide lugs 47 project inwardly from the sides of theopening 0 adjacent the outer end thereof. These respective guide lugsare adapted to cooperate with oppositely disposed ribs l8 formed on thevertically extending portions of the agitating pokers, whereby rotationof the pokers relative to the distributer is prevented. Due to thisarrangement it will be apparent that the agitating fingers 46 of therespective pokers are adapted to travel in concentric orbits, the radiiof which vary in accordance with the zone which the particular poker isdesigned to agitate. The number of pokers preferably corresponds to thenumber of fuel feeding openings in the distributer whereby an agitatingpoker is provided for each of the fuel feeding Zones.

By having a plurality of pokers, I am enabled to provide a sui'lioientnumber of agitating fingers to effectively break and agitate the fuelbed without any objectionable tendency of these fingers to push the fuelbed bodily ahead such as is the case where the total number of fingersis all provided on a single poker, due to the closer spacing of thefingers.

Rotatably surrounding the conductor 26 is a pan 49 comprising aplurality of concentric con'ipartments. Each of these compartments isadapted to have water supplied thereto by suitable water connections 50,each of which may be independently controlled to vary the amount ofwater delivered thereby to the compartments 011 the pokers. For causingthe pan 49 to rotate with the distributer 12 I may support the same on aplurality of angular supports 51 secured at their lower ends to thebearings 13, as illustrated in Figure 2, and at their upper ends to thelower side of the pan 49, as indicated in Figure 5. For delivering coo1-ing water from the respective compartments of the pan 49 to therespective pokers, there may be provided separate pipe connections 52for each of the pokers. Each of the connections 52 is provided at anintermediate point with a telescopic joint 53, to permit verticaladjustment of he pokers, and the connections are arranged to dischargewater initially in the lower portions of the pokers as illustrated inFigures 1 and 8. After filling the pokers the cooling water overflowstherefrom through outlet connections 54; on to caps 55 and thence intothe hollow interior of the distributor 12. From the interior of thedistributor the water passes into the channel 7 through suitableopenlugs 12 (Figures 1 and In this manner the desired water level forsealing purposes may be automatically maintained, and the necessarydegree of water cooling effected.

As it is frequently desirable in constructions of this character toadjust the pokers vertically, I secure to the upper end of each of thepokers a radially extending arm 56, these arms being of differentlengths in accordance with the position of the poker, as clearly shownin Figure 2. At their outer ends the arms 56 are provided withinteriorly threaded nuts 57 adapted to cooperate with threaded adjustingscrews 58. The upper end 59 of each of these adjusting screws may be soshaped as to facilitate the engagement therewith of suitable means forrotating the same, while the lower ends may be formed with heads 60 heldin place by removable housings 61. By this means each of the pokers maybe independently adjusted to the desired vertical position, the ribs aspermitting such adjustment. In some cases it may be desirable todisconnect the housings 61 and permit the agitators to rest by gravityon the fuel bed and thereby automatically adjust their positions inaccordance therewith.

If, for any reason, it is desired to remove any of the pokers, this maybe easily accomplished by disconnecting the water supply connection 52for that poker and disconnecting the required housing 61. When this hasbeen done, the desired poker may be raised upwardly with its water sealcap 55 through the radial opening in the distributer 12. This requiresonly a momentary interruption of the producer operation.

If desired, it will be apparent that the lower surface of the annulartrack 30 on the plate 25 may be roughened, or provided with teeth toincrease the friction existing between the same and the supportingrollers 31, whereby rotation of the plate 25 will be positivelyprevented. In such cases, the surfaces of the rollers 31 may becorrespondingly shaped as required.

The advantages of the present invention arise from the provision ofimproved means for feeding, distributing and agitating the fuel wherebyefficient operation of the pro ducer is insured.

I claim:

1. In a gas producer, a plurality of fuel feed devices, a fuel supportcommon to all of said devices, means for carrying said support by saiddevices, means maintaining a constant supply of fuel on said support,and separate fuel feeding means for transferring fuel from said supportand delivering the same to each of said devices, substantially asdescribed.

2. In a gas producer, a plurality of fuel feed devices, afuel supportcommon to all of said devices, means for carrying said support by saiddevices, means maintaining a constant supply of fuel on said support,and separate adjustable fuel feeding means for delivering fuel from saidsupport to each of said devices, substantially as described.

In a gas producer, a plurality of fuel feed devices, means forseparately feeding fuel to each of said devices, and a separateagitating poker for separately acting upon the fuel as delivered by eachof said devices, substantially as described.

4. In a gas producer, a main body, a distributer having a plurality ofdistinctive feeding means adapted to deliver to Zones differentdistances from the center of the producer, means for producing relativerotation between said body and said distributer, a plurality of fuelfeeding devices, and separate adjustable fuel feeding means fordelivering fuel to each of said devices all delivering to saiddistributor, substantially as described.

5. In a gas producer, a main body, a distributor having a plurality ofdistinctive feedin means adapted to deliver to zones different distancesfrom the center of the producer, means for producing relative rotationbetween said body and said distributer, a plurality of fuel feedingdevices, and separate fuel feeding means for delivering fuel to each ofsaid devices all delivering to said distributor, substantially asdescribed.

6. In a gas producer, a bot y, a distributor having a plurality ofdistinctively differentfuel feeding means, means for producing relativerotation between the body and distributor, a plurality of fuel receivingand feeding devices, means for operating such devices, separate fuelfeeding means for delivering fuel to each of said devices, and a commonconstant source of supply for all of said means, substantially as:described.

7. In a gas producer, a body, a distributer, means for producingrelative rotation between the body and distributer, a plurality of fuelfeed devices, separate fuel feeding means for delivering fuel to each ofY tart till i i il l 'il.

said devices, and a common source of supply for all of said meanscarried by said devices for rotation relatively thereto, said meansbeing individually adjustable for delivering varyingamounts of fuel fromsaid common source of supply to each of said devices, substantially asdescribed.

8. In a gas producer, a distributor con structed to initially projectseparate streams of fuel onto the fuel bed in separate zones lying atdifferent distances from the center of the fuel bed, a commonautomatically measured constant source of supply, and means fordelivering measured quantities of fuel from said supply to saiddistributor, substantially as described.

9. In a gas producer, a plurality of fuel feed devices each. adapted toinitially deliver fuel to the fuel bed in zones lying at differentdistances from the center of the fuel bed, a fuel support common to allof said devices, means for maintaining a constant supply of fuel on saidsupport, and separate means for feeding fuel from said support to eachof said devices, substantially as described.

10. In a gas producer, a fuel supporting member, means for maintaining aconstant amount of fuel on sai member, a plurality of fuel feeddevicesffipa'ff ately transferring fuel from said member to saiddevices, and means for operating said transfer means, substantially asdescribed.

11. In a gas producer, a fuel supporting member, means for maintaining aconstant amount of fuel on said member, a plurality of fuel feeddevices, separate independently adjustable means for delivering fuelfrom said member to each of said devices, and means carrying saidsupporting member for operating said fuel delivery means, substantiallyas described.

12. In a gas producer, a. fuel supporting plate, means engaging saidplate at a plurality of spaced points for carrying the same, a pluralityof fuel feed devices cooperating therewith, means for producing relativerotation between said plate and said devices, and means cooperating Withsaid plate for delivering fuel to each of said devices during suchrelative rotation, substantially as described.

13. In a gas producer, a plurality of fuel feed devices, each adapted toseparately discharge fuel at a different distance from the center of thefuel bed, separate means for agitating the fuel delivered by each ofsaid devices, and means for operating said agitating means to effectfuel distribution, substantially as described.

14. In a gas producer, a plurality of fuel feed devices, each adaptedtoseparately discharge fuel at a different distance from the center ofthe fuel bed, separate means for agitating the fuel delivered by each ofsaid devices, each of said means being effective on different portionsof the fuel bed, and means for operating said agitating means to effectfuel distribution, substantially as described.

15. In a gas producer, a body, a distributer, said distributer having aplurality of fuel feed openings therethrough, each of said openingshaving a Wall portion of different inclination from the correspondingwall portions of the other openings, a separate fuel feeding chute fordelivering fuel to each of said openings, a common fuel supporting platefor all of said chutes, and means for engaging the fuel on said plateand transferring the same from said plate to said chutes, substantiallyas described.

16. In a gas producer, a body, a distributer, said distributer having aplurality of fuel feed openings therethrough, a separate fuel feedingchute for delivering fuel to each of said openings, a common fuelsupporting plate for all of said chutes, individually adjustable meansfor transferring fuel from said plate to each of said chutes and meanscarried by each of said chutes for supporting said plate, substantiallyas described.

17. In a gas producer, a body, a distributer, said distributor having aplurality of fuel feed openings therethrough, a separate fuel feedingchute for delivering fuel to each of said openings, a common fuelsupporting plate for all of said chutes, means for engaging the fuel onsaid plate and transferring the same from said plate to said chutes, anda separate agitating means for separately agitating the fuel deliveredthrough each of said openings, substantially as d scribed.

18. In the method of delivering fuel to gas producers, the stepsconsisting in dividing a supply of fuel into distinct and separatestreams, interrupting each of the streams to prevent escape of gas fromthe producer, and separately delivering the streams to a plurality ofconcentric zones of substantially equal areas constituting the entirearea of the fuel bed, substantially as described.

19. In the method of delivering fuel to gas producers, the stepsconsisting in maintaining a common constant source of supply, dividingsaid supply of fuel into distinct and separate streams, separatelydelivering the streams to a plurality of concentric zones ofsubstantially equal areas and constituting the entire area of the fuelbed, and varying the amount of fuel in each of said streams as desired,substantially as described.

20. In a method of delivering fuel to gas producers, the stepsconsisting in dividing a supply of fuel into distinct and separatestreams, separately delivering the streams to a plurality of concentriczones of substantially equal areas constituting the fuel bed, andvarying the amount of fuel in each of said streams as desired,substantially as described.

21. In a gas producer, a plurality of fuel feeding devices, a fuelsupporting member carried by said devices, scrapers extending over saidmember for delivering fuel to each of said devices, and means forproducing relative rotational movement between said member and saidscrapers, substantially as described.

22. In a gas producer, a plurality of fuel feeding devices, a fuelsupporting member carried by said devices, scrapers extending over saidmember for delivering fuel to each of said devices, means forindependently adjusting each of said scrapers, and means for producingrelative rotational movement b tween said member and said scrapers,substantially as described.

23. In a gas producer, a plurality of fuel feeding devices, a fuelsupporting member carried by said devices, means for maintaining aconstant quantity of fuel on said member, scrapers extending over saidmember for delivering fuel to each of said devices, and means forproducing relative rotational movement between said member and saidscrapers, substantially as described.

2 1. In a fuel feed for gas producers, a substantially fiat fuelsupporting member, means for delivering fuel thereto, means fortransferring fuel therefrom in separate streams, and means for receivingthe fuel transferred therefrom, and means for engaging each stream toprevent the escape of gases and delivering measured quantities of thefuel to the producer, substantially as described.

25. In a fuel feed for gas producers, a supporting member, means formaintaining a substantially constant amount of fuel thereon, meansextending into the fuel on said means for transferring fuel therefrom individed streams, and means for receiving the fuel transferred therefromand initially delivering the same to the producer at different distancesfrom the center thereof, sub stantially as described.

26. In a fuel feed for gas producers, a supporting member, means fordeliveri. fuel thereto, a plurality of scrapers movable relativelythereto for transferring fuel in measured quantities therefrom, andmeans for receiving the fuel transferred therefrom and delivering thesame in measured charges to the producer, substantially as described.

27. In a fuel feed for gas producers, a substantially flat supportingmember, means for delivering fuel thereto, means extend ng over saidmember for transferring fuel therefrom, means producing relativerotation between said member and said means,

means forming a seal for receiving the transferred fuel and dischargingthe same periodically in measured charges into the producer, and meanseffecting a distribution of said fuel Within the producer, substantiallyas described.

28. In fuel feed for gas producers, a substantially fiat fuel supportingmember, means for delivering fuel thereto, means to prevent the spillingof fuel therefrom, means projecting over said member from one edgethereof for transferring fuel therefrom, and means for producingrelative rotational movement in the plane of said member between saidmember and said last mentioned means for effecting the removal of fuelfrom said member, substantially as described.

29. In a fuel feed for producers, a substantially flat supportingmember, means for delivering fuel thereto, a scraper extending over saidmember from one edge thereof for transferring fuel therefrom, and meansfor producing relative rotational movement in the plane of said memberbetween said member and said scraper for effecting transfer of fuel fromsaid member, substantially as described.

30. In a fuel feed for gas producers, a substantially fiat circular fuelsupporting member, a fuel feeding chute a scraper carried by said chuteand projecting over said member to engage fuel thereon, and means formoving said scraper around said member, substantially as described.

31. In a fuel feed for gas producers, a substantial y flat circular fuelsupporting member, a scraper projecting over said member to engage fuelthereon, and supporting means for said member for rotating said memberagainst the scraper, substantially as described.

32. In a fuel feed for gas producers, a substantially flat circular fuelsupporting member, a scraper projecting over said member to engage fuelthereon, and means for rotating both the fuel supporting member and thescraper in opposite directions, substantially as described.

33. In a fuel feed for gas producers, a fuel conductor, a circular platebelow said conductor receiving fuel therefrom, said fuel spreading outupon said plate substantially as determined by the angle of repose ofthe fuel, means preventing the spilling of fuel from the plate, scrapingmeans extending inwardly over a portion of said plate for transferringfuel therefrom, and means producing relative movement between theperiphery of said plate and said scraper, 125

substantially as described.

In a fuel feed for gas producers, a fuel conductor, a circular platebelow said conductor receiving fuel therefrom, said fuel spreading outupon said plate substantially as determined by the angle of repose 130of the fuel, scraping means extending in- Wardly over a portion of saidplate for trans- 1 ferring fuel therefrom, and means producing relativemovement between the periphery of 5 said plate and said scraper, saidmeans forming a rolling support for said plate, substantially asdescribed.

35. In a fuel feed for gas producers, a fuel supporting plate, fueldelivery means therefor, a rolling support for said plate, scrapingmeans carried by said rolling support and projecting over the plate, andmeans for bodily rotating said support and said scraping means,substantially as described.

In testimony whereof I have hereunto set my hand.

FRANCIS H. TREAT.

Certificate of Correction. 4 It is hereby certified that inLettersPatent No. 1,550,991, granted August 25,

- 1925, upon the application of Francis H. Treat, of East Cleveland,Ohio, for an improvement in Gas Producers, an error appears in theprinted specification requiring correction as follows: Page 5, line 30,claim 10, before the Word separately insert the Words means for; andthat the said Letters Patent should be read With this correction thereinthat the same may conform to the record of the case in the PatentOfiice.

Signed and sealed this 13th day of October, A. D. 1925.

[SEAL] KARL FENNING,

Acting Gammz'ssz'oner of Patents.

